11220012021 has 8 divisors (see below), whose sum is σ = 14970965184. Its totient is φ = 7474533440.

The previous prime is 11220011981. The next prime is 11220012047. The reversal of 11220012021 is 12021002211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220012021 - 2¹⁴ = 11219995637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220011988 and 11220012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220012521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363860 + ... + 1372061.

It is an arithmetic number, because the mean of its divisors is an integer number (1871370648).

Almost surely, 2^11220012021 is an apocalyptic number.

It is an amenable number.

11220012021 is a deficient number, since it is larger than the sum of its proper divisors (3750953163).

11220012021 is a wasteful number, since it uses less digits than its factorization.

11220012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737291.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11220012021 its reverse (12021002211), we get a palindrome (23241014232).

The spelling of 11220012021 in words is "eleven billion, two hundred twenty million, twelve thousand, twenty-one".